'Tardiva' is a late-flowering (early to late autumn) cultivar with loosely-packed, sharply pointed white flower heads that turn purplish-pink with age. It is a vigorous, fast growing deciduous shrub that reaches 8 to 12 feet tall.
Noteworthy CharacteristicsThis is one of the most cold-hardy species. It may be grown as a single-stemmed specimen or as a multi-stemmed shrub. Flowers are good for cutting and drying.
CareGrow in moist, but well-drained soil, in sun to partial shade. Blooms on current season's wood; may be cut back to a few buds to form a framework in spring to produce larger flowers, or alternately, allow to grow with minimal pruning.
PropagationSow seed in a cold frame in spring; take softwood cuttings in early summer, hardwood cuttings in winter.
ProblemsGray mold, slugs, powdery mildew, rust, ringspot virus, leaf spots.
- Genus : Hydrangea
- Zones : 3, 4, 5, 6, 7, 8
- Plant Height : 6 to 10 feet
- Plant Width : 6 to 10 feet
- Growth Rate : Fast
- Tolerance : Frost Tolerant
- Light : Full Sun to Partial Shade
- Moisture : Medium Moisture
- Flower Color : Pink, White
- Characteristics : Showy Seed Heads
- Plant Type : Shrubs
- Bloom Time : Summer
- Plant Seasonal Interest : Summer Interest